One day, it would indeed be interesting if the Franchise was able to take a look at a compelling counterpart to the Federation, in the sense of there being another multi-species democracy out there that would have its own set of ideas as to how to go about their business; but finding the right place for such a story to be told would be the real trick.
Exactly the point I was making: the writers never had the courage to show what the Federation looked like in comparison to other "white hats." We only saw them compared to tyrants and outright bigots, so of course the conclusion people draw from that--before looking deeper--is that the Federation is a perfect knight in shining armor. Credible
opposition would reveal the ugly side fast.